/* Copyright (C) 2004 - 2006  db4objects Inc.  http://www.db4o.com

This file is part of the db4o open source object database.

db4o is free software; you can redistribute it and/or modify it under
the terms of version 2 of the GNU General Public License as published
by the Free Software Foundation and as clarified by db4objects' GPL 
interpretation policy, available at
http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
Suite 350, San Mateo, CA 94403, USA.

db4o is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. */
namespace Db4objects.Db4o.Internal
{
	/// <summary>
	/// improves YInt performance slightly by not doing checks
	/// and by doing the comparison with a substraction
	/// </summary>
	/// <exclude></exclude>
	public class PrimitiveIntHandler : Db4objects.Db4o.Internal.Handlers.IntHandler
	{
		public PrimitiveIntHandler(Db4objects.Db4o.Internal.ObjectContainerBase stream) : 
			base(stream)
		{
		}

		public override Db4objects.Db4o.Internal.IComparable4 PrepareComparison(object obj
			)
		{
			_currentInteger = ((int)obj);
			_currentInt = _currentInteger;
			return this;
		}

		private int _currentInteger;

		private int _currentInt;

		public override int CompareTo(object obj)
		{
			return Val(obj) - _currentInt;
		}

		public override object Current()
		{
			return _currentInteger;
		}

		public override bool IsEqual(object obj)
		{
			return Val(obj) == _currentInt;
		}

		public override bool IsGreater(object obj)
		{
			return Val(obj) > _currentInt;
		}

		public override bool IsSmaller(object obj)
		{
			return Val(obj) < _currentInt;
		}
	}
}
